Our lab routinely reuses ethidium bromide for staining mini gels. We
store the EtBr-containing buffer in a clear bottle at RT and are able to
reuse the buffer an average of 10-20 times before the EtBr becomes
depleted.
Brett Beitzel
brett_beitzel at msmtp.idde.saci.org
Cancer Therapy and Research Center
San Antonio, TX
"A drug is something that when injected into a guinea pig produces a
scientific paper." - Anon